In terms of making the world a better place, this is one of the things that I think Couchsurfing.com enables that is just mind-blowing. I mean, here I am, a stranger in a strange and wonderful land and suddenly, I am invited, welcomed, and shown things that I would never have experienced without CS.com.
I had packed carefully to make sure I wouldn’t have any problems getting through customs. When I arrived, I handed the card to the customs agent and he crumbled it into a ball and threw it in the trashcan. Then he stamped my passport. There was no bag searching, no barrier, and nothing beyond a sign that said something like “If you have things you shouldn’t you can put them here”.